david8689's profile

12 Messages


262 Points

Monday, November 13th, 2023 10:14 PM

Emails Sent To Gmail Accounts Are Bouncing Back On Us!

My wife and I are having an issue with gmail accounts that we are trying to communicate with being bounce back to us with error messages saying that our host email account has not been authenticated.

Please help!! We are trying to email clients estimates! Let me know what you need from me.



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12 Messages


262 Points

4 months ago

Below is the type error message we are receiving.  Hello...any service techs out there???

"This message was created automatically by mail delivery software.


A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:



    host gmail-smtp-in.l.google.com []

    SMTP error from remote mail server after end of data:

    550-5.7.26 This mail has been blocked because the sender is unauthenticated.

    550-5.7.26 Gmail requires all senders to authenticate with either SPF or DKIM.


    550-5.7.26  Authentication results:

    550-5.7.26  DKIM = did not pass

    550-5.7.26  SPF [drcustomcontracting.com] with ip:

    [] = did not pass


    550-5.7.26  To mitigate this issue, please visit Gmail's authentication guide

    550-5.7.26 for instructions on setting up authentication:

    550 5.7.26  https://support.google.com/mail/answer/81126#authentication m15-20020a05622a118f00b0041994a9c23asi5672019qtk.420 - gsmtp"

Brand User

10.4K Messages


139.7K Points

3 months ago


I would recommend using Cloudflare to add DKIM and DMARC records for your domain. This may resolve this issue:


‎DKIM Record | Homestead Community